Peristaltic pump having electrically grounded components
AssigneeFresenius Medical Care Deutschland GmbH
InventorsMatthias Brandl, Martin Prinz, Franz Pleiner
Life of this patent
Estimating the term…
Abstract
A peristaltic pump for use in medical technology with a stator and a rotor. The stator 40 has an occlusion bed 12 which forms the contact area with a tube accommodated within, and the rotor is provided with rolling elements suitable for occluding a tube accommodated between the occlusion bed and the rolling elements. At least a part of the occlusion bed has an electrically conductive surface for reducing and/or preventing electrostatic charging of the tube. The stator may be injection molded from an electrically non-conductive plastic and the electrically conductive surface may be formed by a molded-in metallic insert or a molded-in metallic foil insert.
Claims11
A peristaltic roller pump for use in medical technology comprising:
- a stator and a rotor, said stator being injection molded from an electrically non-conductive plastic and having an occlusion bed with a cylindrical surface facing inwards which forms the contact area with a tube accommodated within, and the rotor being provided with rollers for occluding the tube accommodated between the cylindrical surface of the occlusion bed and the rollers, at least a part of the inward facing cylindrical surface of the occlusion bed having an electrically conductive surface for at least one of reducing and preventing electrostatic charging of the tube during pump operation, said electrically conductive surface being the surface of one of a molded-in metallic insert and a molded-in metallic foil insert, said insert having a basic cylindrical shape with a flange, said flange facing radially inwards and being disposed around an entire circumference of said insert.
A medical device for extracorporeal blood treatment comprising a peristaltic roller pump having a stator and a rotor, said stator being injection molded from an electrically non-conductive plastic and having an occlusion bed with a cylindrical surface facing inwards which forms the contact area with a tube accommodated within, and the rotor being provided with rollers for occluding the tube accommodated between the occlusion bed and the rollers, at least a part of the inward facing cylindrical surface of the occlusion bed having an electrically conductive surface for at least one of reducing and preventing electrostatic charging of the tube during pump operation, the electrically conductive surface being the surface of one of a molded-in metallic insert and a molded-in metallic foil insert, said insert having a basic cylindrical shape with a flange, said flange facing radially inwards and being disposed around an entire circumference of said insert.
Dependencies are inferred from the claim text.